<div class="container">
  <mat-toolbar color="primary">
    <button mat-icon-button>
      <mat-icon>home</mat-icon>
    </button>
    <button mat-button routerLink="instance">实例</button>
    <button mat-button routerLink="backup">备份</button>
    <span class="example-spacer"></span>
    <button mat-icon-button>
      <mat-icon>share</mat-icon>
    </button>
  </mat-toolbar>
  <div class="content">
    <router-outlet></router-outlet>
  </div>
</div>
